Chapter 3 Test Review
1. Organic molecules consist mainly of:
A. Carbon and Hydrogen atoms
B. Hydrogen and Oxygen atoms
C. Carbon and Oxygen atoms
2. Which is the largest form of a carbohydrate:
A. Oligosaccharide
B. Monosaccharide
C. Polysaccharide
D. Disaccharide
3. This type of lipid has four carbon rings and no tails:
A. Waxes
B. Fats
C. Phospholipid
D. Steroid
4. At what structural level does a protein become a working molecule:
A. Primary structure
B. Secondary structure
C. Tertiary structure
D. Quaternary structure
5. The hydrophilic head portion of the phospholipid faces the:
A. Cell’s watery interior
B. Cell’s fluid surroundings
C. Both A and B
6. Carbon’s importance to life arises from its ability to form these many versatile bonds:
A. 2
B. 4
C. 6
7. This type of lipid is used by plants to restrict water loss and animals to lubricate skin:
A. Waxes
B. Fats
C. Phospholipid
D. Steriod
8. Which of these would not cause a protein to denature:
A. Salt
B. pH shifts
C. Heat
D. Overuse
9. What is an example of saturated fat:
A. Soybean oil
B. Canola oil
C. Butter
D. Corn oil
10. What is the building block of carbohydrates?
A. Monosaccharides
B. Amino acids
C. Fatty acids
D. Nucleotides
11. The nonadjacent regions that form to create specific domains is termed:
A. Primary structure
B. Secondary structure
C. Tertiary structure
D. Quaternary structure
12. A nucleotide contains:
A. A five carbon ring bonded to a nitrogen base and a phosphate group(s)
B. A five carbon ring bonded to a phosphate base and a nitrogen group(s)
C. A five phosphate ring bonded to a carbon base and a phosphate group(s)
13. The breakdown of large molecules by the enzymatic addition of water is an example of what
kind of reaction:
A. Hydrolysis
B. Oxidation
C. Condensation
D. Reduction
14. A saturated fat has:
A. No double bonds in its tail region
B. Double bonds in its tail region
15. Amino acids are small organic compounds that are the basic subunits of:
A. Carbohydrates
B. Lipids
C. Proteins
D. Nucleic Acids
16. Metabolism refers to the enzyme-mediated chemical reactions by which cells:
A. Acquire and use energy as they build and break down organic molecules
B. Maintain constant body temperature
C. Have the ability to build monomers from polymers
17. What is the main structural component of plants:
A. Starch
B. Glycogen
C. Cellulose
18. What is the basic structure of a fatty acid:
A. A hydrophobic hydrocarbon tail with a hydrophilic carboxyl head
B. A hydrophilic hydrocarbon tail with a hydrophobic carboxyl head
C. A hydrophobic carboxyl tail with a hydrophilic hydrocarbon head
D. A hydrophilic carboxyl tail with a hydrophobic hydrocarbon head
19. The linear series of amino acids linked together in a polypeptide chain is termed:
A. Primary structure
B. Secondary structure
C. Tertiary structure
D. Quaternary structure
20. A small molecular group bonded to a carbon of an organic compound that imparts a specific
chemical property is this type of group:
A. Functional
B. Variable
C. Organic
21. Carbohydrates have a consistent carbon to hydrogen to oxygen ration of:
A. 1:2:2
B. 2:1:2
C. 1:2:1
22. In a cell membrane, phospholipids are arranged in a:
A. Monolayer
B. Bilayer
C. Trilayer
23. Peptide bonds link:
A. Monosaccharides
B. Fatty Acids
C. Amino Acids
D. Nucleotides
24. When a protein denatures these bonds are broken:
A. Peptide
B. Covalent
C. Hydrogen
25. The building blocks of nucleic acids are:
A. Monosaccharides
B. Amino acids
C. Fatty acids
D. Nucleotides
26. How do cells use monosaccharides:
A. As a building block for DNA
B. To catalyze metabolic reactions
C. For cellular fuel
27. Fatty, oily, or waxy compounds are:
A. Carbohydrates
B. Lipids
C. Proteins
D. Nucleic Acids
28. Sucrose is composed of:
A. Fructose and Galactose
B. Glucose and Galactose
C. Fructose and Glucose
29. Which lipid forms cell membranes:
A. Saturated fats
B. Phospholipids
C. Unsaturated fats
D. Steriod
30. Which shows growth of a protein:
A. amino acid – polypeptide – peptide - protein
B. amino acid – peptide – polypeptide - protein
C. peptide – amino acid – polypeptide - protein
D. polypeptide – amino acid – peptide - protein
31. The bonding of glucose to galactose forms:
A. Lactose
B. Sucrose
C. Maltose
32. Triglycerides contain:
A. Glycerol and fatty acids
B. Phosphate and fatty acids
C. Protein and fatty acids
33. Plants store their monosaccharides in this form:
A. Starch
B. Glycogen
C. Cellulose
34. Which is not a function of a protein:
A. Defense
B. Enzyme
C. Movement
D. Transport
35. Which is not a six carbon monosaccharide:
A. Glucose
B. Sucrose
C. Galactose
D. Fructose
36. Which amino acid structure defines it and makes it unique:
A. Amine group
B. Carboxyl group
C. R group
37. The formation of large molecules from small subunits is know as what kind of reaction:
A. Hydrolysis
B. Oxidation
C. Condensation
D. Reduction
38. Animals store their monosaccharides in this form:
A. Starch
B. Glycogen
C. Cellulose
39. The polypeptide chain that twists and turns is termed:
A. Primary structure
B. Secondary structure
C. Tertiary structure
D. Quaternary structure
40. In a chain of nucleotides the sugar of one nucleotide is bonded to the ______________ of the next
nucleotide:
A. Sugar
B. Amine
C. Phosphate
Name: ___________________
Chapter 3 Test Review
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